Reinforced-concrete bridge structure



J. STAINER.

REINFORCED CONCRETE BRIDGE STRUCTURE.

APPLICATION FILED MAY3|,1919.

1,344,929. Patentd'iune 29,1920.

3 SHEETS-SHEET I.

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"@ATTORNEYS.

.l. STAINER.

REINFORCED CONCRETE BRIDGE STRUCTURE.

APPLICATION FILED MAY 31, 1919.

1,344,929. Patented June 29, 1920.

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7 BY W i ZA TTORNEYS.

J. STAINER E REINFORCED CONCRETE BRIDGE STRUCTURE.

APPLICATION FILED MAY3I, 1919.

1,344,929. I Patented June 29, 1920.

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r art Toma was UNITED STATES osEF .STA'INER.,-O*F EPIERRE,SOFIJTHIDAKOTA.

A ,f nnmrononn-ooivcnnrn BRIDGE I'srRUcTURE.

To all whom it may concern: y Be it known that I, Josnr STAINER, a c1t1-zen of the United States, residing at Pierre,

in the county of Hughes and State of 'South' Dakota, have inventedcertain new and useful Improvements in Reinforced-Concrete BridgeStructures,of which the following a specification, reference being hadtherem to the accompanying drawings.

This invention relates to improvements'in reinforced concrete bridgestructures, and has for its object the improvement ofthe construction ofa bridge formed of reinforced concrete, whereby the strength of thebridge will be increased without ;ma-'

terially increasing the 'cost of construction of the entire structure.

Another object of the invention is the strengthening of the span or sidestructures of the bridge by a peculiar system of rods or bars, whereby arelatively small amount of material may be used in constructing the spanor side structures thereby "resulting in a material advantage by reasonof reducing the cost of construction of'a bridge structuref With theseand other objects'in view, my invention comprises certain novelconstructions, combinations, and arrangements of parts as will behereinafter specifically described, illustrated in the accompanyingdrawings, and more particularly pointed out. in the appended claims.

In the drawings,

Figure 1 is a view in elevation of a bridge structure constructed inaccordance with the present invention, partly shown in full line andpartly shown in section.

Fig. 2 is a view taken on line 2--2, Fig. 3, looking in the direction ofthe arrows.

Fig. 3 is a view taken on line 3 3, Fig. 2, looking in the directionofthe arrows.

Fig. 1 is an enlarged sectional view taken on line 1--4, Fig. 1, lookingin the direction of the arrows.

Fig. 5 is a fragmentary perspective View of one of the transverse orprimary beams showing the truss rods or bars passing under and throughthe same.

Fig. 6 is a bottom plan view of a bridge structure constructed inaccordance with the present invention.

Referring to the drawings by numerals, 1, 1 designate the abutments,while 2,2 are the spans or side structures, and 3 is the floorstructure.

Specification of Letters Patent. Patent d J 29 Application fi led May31, 1919. SerialiNoi 300,856.

The abutments 1 are formed of reinforced concrete, and built upon theabutments are side structures 2 and the floor 3.

7 Each side structure 2 comprises a verti-' cal wall of concrete 4, andin each wall 4 is preferably a pair of primary truss rods or bars 5. Inthe lower portion of each side structure are preferably pairs ofauxiliary truss rods or bars 6 and 7. For anchoring the ends of the bars5, 6, and 7 inthe body of the sides, each bar is preferably bent atan'angle, at its outer end, as shown at 8. Additional rods or bars, asshown by dotted lines 9 and 10, Fig. 1, are embedded inthe sidestructures for further reinforcing and strengthening said sidestructures.

The floor structure comprises transverse or primary I-beams 11 embeddedat their ends in the side structures 2, and auxiliary PATENT OFFICE. '1

or -longitudinally-extending'I beams 12 have 11, and the auxiliary orlongitudinally-extending beams v12 are fastened by plates 13, as shownin Fig.4, without departing from the spirit and scope of the presentinvention, as the addition of any number of primary or transverse beamsand the auxiliary or longitudinally-extending beams 12 may be involved,at the option of the constructor, without changing my invention.

At 14, Fig. 3, I have shown, in section, the webs of the primar andauxiliary I- beams to illustrate how these beams are broughttogether,'and held in said position by the angle plates 13 and theordinary rlveting of said plates and beams together.

Referring particularlyl to Figs. 1 and; 5,. the truss rods or bars 5, 6,and 7 are shown bent downwardly at their middle, the rods or 1 bars 5passing'through apertures 15 in the web of the transverse I-beam 11, andthe rods or bars 6 and 7 pass under the I-beam,

over the floor to carry the Weight, since the primary I-beams 11 aresuspended in the concrete by the suspending or truss rods or bars 5, 6,and 7. I have preferably used two of the primary or transverse 'I-beams11, but, as indicated hereinbefore, any number can be employed in theconstruction of a bridge in accordance with the present invention,depending entirely upon the length or span .of the bridge to beconstructed.

From the foregoing description, it will be understood that when carryingout my invention, in constructing a bridge, certain minor alterations orchanges may appear to one skilled in the art to which this inventionrelates, and, therefore, I reserve the right to make such minoralterations or changes as shall fairly fall within the scope of theappended claims.

What I claim is: V

1. In a bridge structure of the class described, the combination withabutments, of side structures and a floorv structure supported upon saidabutments, said floor structure including transverse I-beams andlongitudinally extending I-beams, said I trans verse I-beams havingtheir ends embedded in the side structures, saidlongitudinally-extending I-beams having their outer ends embedded inportions of the floor and having their inner ends fastened to thetransverse Lbeams, a plurality of truss'bars in each side structure andbentdownvvardly near their middle, and some of said bars passing throughthe transverse I-beams and others of the bars passing under said I-beams near their ends.

'2. In a bridge structure of the class-described, the combination Withabutments, of

side structure's and a floorstructure including reinforcing Lbeamshaving their ends extending into the side structures, and truss meansembedded in the side structures and having their outer ends providedwith anchoring means and being bent downwardly intermediate their endsand extending under the top of the reinforcing I-beams.

In a bridge structure of the class described, the combination Withabutments, of side structuresand a floor structure carried by saidabutments, said floor structure including primary beams having Webs andauxiliary beams secured to'the webs of the primary beams nearfltheirtop, a'body of reinforced concrete carried by the upper portions of theprimary and auxiliary beams, each of said side structures includingreinforcing horizontal rods orbars and a series of truss bars bentdownwardly intermediate their ends and having their ends bent at anangle for constituting anchor means, and some of said trussbars havingtheir downwardly bent portions extending through the webojt the primarybeams and others of said truss bars extending under 1 the primary beams,substantially as shown and described. v v y In testimony whereofhereunto, aflix my I signature.

JOSEF STAINER,

